Frontier models are the most capable AI models of their time, usually built by only a few large providers.
Example
When a provider launches a new top model that leads many tests, it is often called a frontier model.
For pros
The term has no legal definition and shifts with every model generation. Legally closer is the EU AI Act's GPAI model with systemic risk. Industry groups such as the Frontier Model Forum work on safety standards for such models.
